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Updated weekly · Last refresh Oct 17

Square Peg Technologies Data Engineer Interview Questions

The questions to prepare for a Square Peg Technologies Data Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
PipelinesStart here. 5 questions · ~40 min
Handling a Production Pipeline FailureEasy

Describe a real production pipeline failure, how you diagnosed and fixed it, and what changes you made around orchestration, quality, and reruns.

InfrastructureIdempotencyQualitySquare Peg Technologies
Data Cleaning in ETL PipelinesEasy

Approach for cleaning and preparing raw data inside an ETL pipeline.

Data WranglingETLQualitySquare Peg Technologies
Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualitySquare Peg Technologies
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualitySquare Peg Technologies
Automating Pipeline InfrastructureMedium

Tests your ability to use automation to provision and manage infrastructure for data pipelines.

data pipelinesAutomationCloudSquare Peg Technologies

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2
Behavioral & Leadership4 questions · ~32 min
Balancing Speed With StabilityMedium

Tests judgment in balancing fast delivery with production stability, including prioritization, ownership, and stakeholder alignment under pressure.

Decision MakinginnovationstabilitySquare Peg Technologies
Explaining Data Issues to StakeholdersMedium

Tests whether you can translate complex trends or data quality issues into clear business language and drive stakeholder alignment.

Data QualityStakeholder ManagementCommunicationSquare Peg Technologies
Pivoting Under Changing RequirementsMedium

Tests adaptability under changing requirements, with emphasis on prioritization, ambiguity management, and ownership during a technical pivot.

technical approachadaptabilityrequirements changeSquare Peg Technologies
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The finish line: interview-readyComplete all 9 questions to finish this plan.